Abstract: A method of performing automatic tuning on a deep learning model includes: utilizing an instruction-based learned cost model to estimate a first type of operational performance metrics based on a tuned configuration of layer fusion and tensor tiling; utilizing statistical data gathered during a compilation process of the deep learning model to determine a second type of operational performance metrics based on the tuned configuration of layer fusion and tensor tiling; performing an auto-tuning process to obtain a plurality of optimal configurations based on the first type of operational performance metrics and the second type of operational performance metrics; and configure the deep learning model according to one of the plurality of optimal configurations.

Abstract: A multi-antenna system includes: a server; a first antenna group, provided on a base station and including multiple first antennas including a first representative antenna and a first non-representative antenna, the base station performing intra-group channel estimation to obtain and transmit to the server multiple first inner channel estimation coefficients between the first representative antenna and the first non-representative antenna, and serving a user device; and a reference device, communicating with the server and the first antennas, performing channel estimation between the reference device and the first representative antenna to obtain and transmit to the server multiple first outer channel estimation coefficients between the reference device and the first representative antenna. The server calculates a precoding matrix according to the first inner and first outer channel estimation coefficients, and the base station performs data transmission with the user device according to the precoding matrix.

Abstract: A base station includes a processing unit, a plurality of radio frequency units, a plurality of antenna units, a control unit and an adjustment unit. The processing unit generates a baseband signal and provides a control strategy. The radio frequency units receive the baseband signal to generate a plurality of radio frequency signals. The antenna units transmit a plurality of output signals. The control unit receives the control strategy and generates a plurality of control signals according to the control strategy. The adjustment unit receives the radio frequency signals and the control signals, switches the connection of RF paths with high-gain or low-gain between the radio frequency units and the antenna units and adjusts gains of the radio frequency signals according to the control signals, so as to generate the output signals.

Abstract: A wireless access method for a communication system is provided. The wireless access method is adapted to a base station, and includes the following steps. A first control information is transmitted through a first frequency band. A second control information is transmitted through a second frequency band. The time difference between the transmission time points of the first control information and the second control information is less than a slot time, and the first frequency band is different from the second frequency band.

Abstract: A multi-antenna system includes: a server; a first antenna group, provided on a base station and including multiple first antennas including a first representative antenna and a first non-representative antenna, the base station performing intra-group channel estimation to obtain and transmit to the server multiple first inner channel estimation coefficients between the first representative antenna and the first non-representative antenna, and serving a user device; and a reference device, communicating with the server and the first antennas, performing channel estimation between the reference device and the first representative antenna to obtain and transmit to the server multiple first outer channel estimation coefficients between the reference device and the first representative antenna. The server calculates a precoding matrix according to the first inner and first outer channel estimation coefficients, and the base station performs data transmission with the user device according to the precoding matrix.

Abstract: The disclosure provides a transceiver of a communication system using hybrid beamforming and performing an antenna calibration method. In an exemplary embodiment in accordance with the disclosure, the transceiver may generate a plurality of scrambling sequences. The transceiver may comprise a plurality of coupling circuits to receive a feedback signal. The transceiver may use the plurality of scrambling sequences to recover the transmit signals output by the antenna elements from the feedback signal. Thus, the transmitter may perform antenna calibration for each antenna element.

Abstract: A wireless access method for a communication system is provided. The wireless access method is adapted to a base station, and includes the following steps. A first control information is transmitted through a first frequency band. A second control information is transmitted through a second frequency band. The time difference between the transmission time points of the first control information and the second control information is less than a slot time, and the first frequency band is different from the second frequency band.

Abstract: A communication device and a transmitting and receiving method thereof. The communication device configured to transmit a first signal includes a code block (CB) segmentation unit, a plurality of first processing units, and a first resource mapping module. The CB segmentation unit is configured to divide at least one first transport block corresponding to the first signal into a plurality of first code blocks. Each of the first code blocks corresponds to one of the first processing units. The first processing units encode the first code blocks to obtain a plurality of first symbols. The resource mapping module performs resource mapping of the first symbols to obtain a first resource block.

Abstract: The disclosure provides a transmitter of a communication system using hybrid digital/analog beamforming and configured to perform digital pre-distortion (DPD). In an exemplary embodiment in accordance with the disclosure, the transmitter may generate a plurality of scrambling sequences. The transmitter may comprise a plurality of combining modules to receive a combined feedback signal. The transmitter may use the plurality of scrambling sequences to recover the signals output by the antenna arrays from the combined feedback signal. Thus, the transmitter may perform DPD for each antenna array.

Abstract: A base station includes a processing unit, a plurality of radio frequency units, a plurality of antenna units, a control unit and an adjustment unit. The processing unit generates a baseband signal and provides a control strategy. The radio frequency units receive the baseband signal to generate a plurality of radio frequency signals. The antenna units transmit a plurality of output signals. The control unit receives the control strategy and generates a plurality of control signals according to the control strategy. The adjustment unit receives the radio frequency signals and the control signals, switches the connection of RF paths with high-gain or low-gain between the radio frequency units and the antenna units and adjusts gains of the radio frequency signals according to the control signals, so as to generate the output signals.

Abstract: A communication system and operating method thereof are provided. The communication system includes an intelligent antenna unit which includes a plurality of antennas, an antenna selecting unit, one or more signal processing units and a control unit. The control unit is configured to: set one or more antenna-sectors from the antennas, each of the antenna-sectors includes one or more antennas selected from the antennas. And set a plurality of antenna-sector configurations, each of the antenna-sector configurations includes one or more sectors configured to the signal processing units, wherein the sectors are selected from the antenna-sectors. The control unit selects one of the antenna-sector configurations to operate communication transmission of a user equipment, and each signal processing unit configured to each sector of the selected antenna-sector configuration operating beam sweeping based on a number of antenna beam deployed to the configured each sector.

Abstract: A communication system and an operating method thereof are provided. The communication system includes at least one user equipment, at least one remote radio head (RRH), a measuring unit, a set determining unit and an antenna selecting unit. The RRH is electrically connected to a plurality of antennas. The measuring unit is for controlling a measurement of a signal strength of the at least one user equipment. The set determining unit is used for selecting one of a plurality of antenna configuration sets according to the signal strength for the at least one user equipment. Each of the antenna configuration sets includes a plurality of antenna configurations. Each of the antenna configurations is composed of P of a plurality of antennas. The antenna selecting unit is used for allocating one of the antenna configurations from the antenna configuration set which is selected for the at least one user equipment.

Abstract: A MIMO antenna system and a controlling method thereof are provided. The MIMO antenna system includes a first beam configuration device, a second beam configuration device and a controlling device. The first beam configuration device is used for performing an antenna selection procedure on a plurality of antennas to adjust a beam direction. The second beam configuration device is connected to the first beam configuration device. The second beam configuration device is used for performing a phase shifting procedure to adjust a beam coverage. The controlling device is used for controlling the first beam configuration device and the second beam configuration device.

Abstract: A communication system and operating method thereof are provided. The communication system includes an intelligent antenna unit which includes a plurality of antennas, an antenna selecting unit, one or more signal processing units and a control unit. The control unit is configured to: set one or more antenna-sectors from the antennas, each of the antenna-sectors includes one or more antennas selected from the antennas. And set a plurality of antenna-sector configurations, each of the antenna-sector configurations includes one or more sectors configured to the signal processing units, wherein the sectors are selected from the antenna-sectors. The control unit selects one of the antenna-sector configurations to operate communication transmission of a user equipment, and each signal processing unit configured to each sector of the selected antenna-sector configuration operating beam sweeping based on a number of antenna beam deployed to the configured each sector.

Abstract: A precoding method in a multi-antenna system includes the following steps. A reference device transmits a first reference signal to base station antennas. A base station calculates uplink channel information and transmits it to a coordination server. The base station transmits a second reference signal to the reference device. The reference device calculates downlink channel information and transmits it to the coordination server.

Abstract: A wireless communication device with hybrid beamforming and a control method thereof are provided. The wireless communication device includes a plurality of antennas, a beamforming digital circuit, a plurality of radio frequency (RF) chains, a beamforming analog circuit, a controller and a storage. The RF chains receive signals processed by the beamforming digital circuit to generate antenna signals. The RF chains are connected to a part or all of the antennas through the beamforming analog circuit to transmit the antenna signal to the corresponding antennas. The number of the RF chains is smaller than the number of the antennas. The storage stores a plurality of candidate analog codebooks. The controller selects one of the candidate analog codebooks as a selected analog codebook according to scenario or environmental information, and adjusts the beamforming analog circuit according to the selected analog codebook.

Abstract: A communication system, a coordinator and an interference controlling method are provided. The communication system includes at least two user equipments, at least two remote radio heads (RRHs) and the coordinator. Each of the RRHs electrically connects a plurality of antennas. The coordinator includes a scanning unit, a storing unit and a scheduling unit. The scanning unit operates the measurement of a performance of each of the antennas used for each of the user equipments by antenna sweeping. The RRHs are classified into at least one group. The scheduling unit schedules the communication of the user equipments. At least some of the user equipments using the same one of the at least one group are scheduled in different time slots to prevent from interference.

Abstract: A communication system, a coordinator and a controlling method thereof are provided. The embodiment of the communication system is used for one or more user equipments. The controlling method includes the following steps. A measurement of a plurality of antenna configurations corresponding to the one or more user equipments is controlled to obtain a plurality of performance values. The performance values of the antenna configurations corresponding to the one or more user equipments are recorded. An embodiment of the communication system includes a plurality of Remote Radio Heads, each of which is electronically connected to a plurality of antennas.

Abstract: A communication system and an operating method thereof are provided. The communication system includes at least one user equipment, at least one remote radio head (RRH), a measuring unit, a set determining unit and an antenna selecting unit. The RRH is electrically connected to a plurality of antennas. The measuring unit is for controlling a measurement of a signal strength of the at least one user equipment. The set determining unit is used for selecting one of a plurality of antenna configuration sets according to the signal strength for the at least one user equipment. Each of the antenna configuration sets includes a plurality of antenna configurations. Each of the antenna configurations is composed of P of a plurality of antennas. The antenna selecting unit is used for allocating one of the antenna configurations from the antenna configuration set which is selected for the at least one user equipment.

Abstract: A wireless communication device with hybrid beamforming and a control method thereof are provided. The wireless communication device includes a plurality of antennas, a beamforming digital circuit, a plurality of radio frequency (RF) chains, a beamforming analog circuit, a controller and a storage. The RF chains receive signals processed by the beamforming digital circuit to generate antenna signals. The RF chains are connected to a part or all of the antennas through the beamforming analog circuit to transmit the antenna signal to the corresponding antennas. The number of the RF chains is smaller than the number of the antennas. The storage stores a plurality of candidate analog codebooks. The controller selects one of the candidate analog codebooks as a selected analog codebook according to scenario or environmental information, and adjusts the beamforming analog circuit according to the selected analog codebook.